bug#21816: elisp-mode-tests fails on a case-preserving filesystem

[Eli Zaretskii <eliz@gnu.org>]

> Cc: lekktu@gmail.com, 21816@debbugs.gnu.org, stephen_leake@stephe-leake.org
> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Tue, 3 Nov 2015 20:18:48 +0200
> 
> > This isn't a xref-specific problem, so I think it should have a more
> > general solution that any package could use.  It's not reasonable to
> > expect from every Emacs developer to be an expert on subtle aspects of
> > comparing Windows file names.  We should provide a tested solution for
> > that.
> 
> I don't know which solution to pick, and I believe I don't know the 
> problem well enough. We probably don't want to venture into Java-land 
> here, and encapsulate any type of field into its separate data type, 
> with its comparison function. But, well, we could do that.

I hoped Juanma will pick up the gauntlet.

> In any case, it's not a hugely important problem, compared to others we 
> still have.

One step at a time.